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We study the properties of fermion correlators in a boundary theory dual tothe Reissner-Nordstr\"om AdS_{d+1} background in the presence of a bulk dipole(Pauli) interaction term with strength p. We show that by simply changing thevalue of the parameter p we can tune continuously from a Fermi liquid (smallp), to a marginal Fermi liquid behavior at a critical value of p, to a genericnon-Fermi liquid at intermediate values of p, and finally to a Mott insulatorat large values of the bulk Pauli coupling. As all of these phases are seen inthe cuprate phase diagram, the holographic model we study has the key elementsof the strong coupling physics typified by Mott systems. In addition, we extendour analysis to finite temperature and show that the Mott gap closes. Ofparticular interest is that it closes when the ratio of the gap to the criticaltemperature is of the order of ten. This behavior is very much similar to thatobserved in the classic Mott insulator VO_2. We then analyze thenon-analyticities of the boundary theory fermion correlators for generic valuesof frequency and momentum by calculating the quasi-normal modes of the bulkfermions. Not surprisingly, we find no evidence for the dipole interactioninducing an instability in the boundary theory. Finally, we briefly considerthe introduction of superconducting condensates, and find that in that case,the fermion gap is driven by scalar-fermion couplings rather than by the Paulicoupling.

Dynamical Gap and Cuprate-like Physics from Holography